Cleanup implementation for __pwm_create_sysfs.
Signed-off-by: Marc Pignat <[EMAIL PROTECTED]>
---
Hi all!
Here is a missing piece in the generic pwm implementation.
Bill, the code is simpler that you was thinking ;)
In facts, attributes are deleted by device_unregister -> there is nothing to
worry about attributes (un-)successful creation.
Finding which device was created is also trivial (thanks to class_find_device).
Best regards
Marc
diff --git a/drivers/pwm/pwm.c b/drivers/pwm/pwm.c
index 2f28c20..391f820 100644
--- a/drivers/pwm/pwm.c
+++ b/drivers/pwm/pwm.c
@@ -626,15 +626,23 @@ static int __pwm_create_sysfs(struct pwm_device *pwm)
goto err_dev_create;
ret = sysfs_create_group(&dev->kobj, &pwm_device_attr_group);
if (ret)
- goto err_dev_group_create;
+ goto err_dev_create;
}
return ret;
-err_dev_group_create:
err_dev_create:
- /* TODO: undo all the successful device_create calls */
- return -ENODEV;
+ for (wchan = 0; wchan < pwm->nchan; wchan++) {
+ dev = class_find_device(&pwm_class, NULL,
+ &pwm->channels[wchan],
+ __match_device);
+ if (dev) {
+ put_device(dev);
+ device_unregister(dev);
+ }
+ }
+
+ return ret;
}
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